Rotary glazing machine



Filed Aug. 18. 1925 2 Sheets-Sheet l 35 in--m nwi; mwnw i4 6 11 1 71 116-11107 hQ/M/ Nov. 15, 1927. 1,649,769 D. E. HARDlNG \4 ROTARY GLAZING MACHINE Filed Aug, 18. 1925 r 2 Sheets-Sheet 2 Till Patented Nov. 15, 1927.

UNITED STATES PATENT OFFICE.

DANA n. HARDING, on ARLINGTON, MASSAUHUESETTS, .!=.SSIGNOE 'ro HARDING ENGI- NEERING coMrAnY, or EAST eosron. MASSACHUSETTS, A CORPORATION OFMAS- SACHUSETTS.

ROTARY GLAZING MACH NE.

Application filed August l8, 1925. Serial lilo/51,007.

My present'invention relates to glazing machines, and more particularly to an 1111- proved rotary glazing machine;

An important step in the process of manufacturing leather from hides and sliins consists, in the case of certain kinds of leather, of burilishing or ironing the grain side of the leather so as to impart a glossy finish thereto. Hereto'fore this operation has been performed by mechanical nieans in which a rapidly reciprocating member is moved over the grain side of a sheet of leather held in position on a bed or anvil. These prior machine's areobjectionable from a number of standpoints, among which are, first, the excessive vibration of such machines Which necessitates the strengthening and shoring of a buil dii'ig in which they are locatedto an excessive degree and such strengthening and shoring has continually to be Watched and added to. Second, these inachii'ies are exceedingly dangerous as a Workman sits closely adjacent to the rapidly reciprocating ineniber and the least ill timed movement on his part is apt to result in his being struck by the moving m'e'niber and injured. As a matter of fact, numerous accidents occur fro-nrthis one cause and the machines have acquired throughout the various ftainneries the name of man killers. A still further objection to these machines is the fact that the leather operated on mustbe held in position -on the bed or anvil by the Workman against the pulling force exerted thereon by the rapidly reciprocating glazing tool, and if the leather is not in proper condition; that is, if it contains more than the proper amount of misture,the glazing tool is apt to seize on the leather and drag the same out of the Workmans grasp. Considerable muscular 'lorce is therefore necessary to hold the leather in position and the constant strain isapt to cause ruptures and other disorders. r

In my present invention I have obviated the objections inherent in prior machines, and in carrying out my invention, 1 provide a glazing block holder that is rotatable on a vertical shaft in a horizontal plane, thereby eliminating'all reciprocatory movement. By mounting the glazing blocks on arms rotatable about a center or on thefperiphery of a circular member rotatable in a horizontal plane I am enabled to provide a circul'ar bed or Work su Jort and b Y surroundingthe periphery of the rotating member with a guard, all danger of the Workman be ing injured by coming into contact with the glazing tool is avoided. Further, by this use of a circular bed, I am enabled to, by male ing the circular ncmber o1 proper diameter, provid a plurality ofopcratihg positions, thus making it possible two or more workmen to operate on different hides at one and the same time. By the outlay, therefore, of a sum necessary to acquire one machine, I am enabled to furnish the equivalent of two or more machines.

The principal object of my invention, therefore, is'a n improved glazing machine.

Another object of th invention is an improved rotary glazi'ng machine.

A further object of the invention is an improved rotary glazing machine in which the glazing tools rotate about a fixed center and in a horizontal plane. e

Other objects and novelieatures of the apparatus will appear as the description oi the invention progresses.

In the accompanying drawings illustrating the preferred embodiment of myinvention,

Fig. 1 is a front elevation;

Fig. 2 is a plan View, Fig. his a sectional elevation on the line 3 of 'Fig. 2,and

l ig. dis a se'ctionalelevation on the'line t t of Fig. 8. p

Referring to the draivings, designates a base plate of any suitable size and din'iensions and preferably substantially rectangle larin torni. This base plateis provided with "a plurzility of lugs 11 through which may pass bolts or other members for securing the same in osition on the floor or foundation. Centrally located on the base plate 10 and secured thereto by bolts 12 a su antially circular plate or base 13, and

torn'rcd integral with said-base l3 and diametrically arranged with respect to such base are upwardly extend ng members 14,

these members being-joined at their ,top to a central bearing member 15, as shown in Fig. l. Formed lntegral ith'the base 13 and in alignment with the bearing member 15 is a centrally located bearing member 16. These bearing members 15 and 16 are provided with roller bearings 17 and thrust bearings 18, and mounted in such bearings forrotative movement is a vertical shaft 19. The shaft 19 is held against vertical movementin the bearings 17 and 18 by a nut 20 screwed onto theibottom of such shaft, the shaft being threaded for this purpose. Secured to the shaft 19 adjacent to the lower end thereof is a worm Wheel 21 which meshes with and is driven by a worm 22 secured to a shaft 23 rotatably mounted in bearing members 24: formed integ al with, and extending upwardly from, one side of the circular bed 13. The shaft 23 1s attached to, or may be formed integral wlth, thedriving shaft 25 of a driving motor 26 secured in any desired manner to the base platelO. lVhileI have described the shaft 19 as being rotatedthrough the medium of the worm wheel Qland worm 22 driven from the motorffzli, may, if desired, adopt the alternative method. of driving by belt, 111 this event attaching to the shaft 19 a pulley 27 over which may run a belt 28 leading from any suitablesource of power.

Secured to the base plate 10, and preferably at the corners thereof, are upwardly and inwardly extending supports 29, these supports being any convenient height. Secured to the top of such supports 29 1s a circular ring or rim 30 substantially U- shaped in cross section, as shown in Fig. at,

and this rim 30 is provided on diametrically arranged portions with ralsed bed portlons 31. Secured to the raised portion 31 is an arcuate shaped trough 32 in which is secured ajlayer of resilient material 33 such as rubher, and a plurality of layers of resilient material 34 such as leather. The assembly 32, 33, and 34 forms a work bed or anvil onfwliich is placed the leather 35 to be glazed. The arcuate beds above referred to may be of any length, but each of them preferably occupies slightly less than one fourth of the circumference of the top. of the rings 30. i

Eiecured to the top of the shaft 19 by nuts 36 isfa boss or hub 37 having formed intograltherewith and dian'ietrically arranged with respect thereto the arms 38. The overall length of the two arms 38 is slightly greater than the dianu==.ter of the ring 30, as

clearly shown in Fig. 2, and the outer ends of such arms 38 are provided with a vertical channel 39', the width of this channel extending transversely ofthe width of the ring 30. Adjust-ably secured in each of the channels39 by bolts 40 extending through slots t1 formed in the Walls of such channel are blocks 42, the outer lower end of each of whlchf s provided with anarcuate groove 43. Secured t'othe outer face of each of the clamped a cylindrical glazing block 47,

usually and preferably of glass, although any other suitable material may be employed.

Secured to the outer periphery of the ring 30 at suitable intervals. are outwardly and up *ardly extendingbars a9, and secured to the upper ends of these bars l!) is a ring 50,

the inner diameter of the ring being slightly greater than the distance between the ends of the arms 38 and the height or length of such rings being suliicient to thoroughly shield the top and bottom surfaces of the outer ends of the arms 38 and parts carried thereby. i

The operation of the apparatus is as follows, it being assumed that there will bean operator for each of the beds or anvils tll and, assuming that there will be two operators, as shown, aeh of the operators will, through the usual means, have control er either the driving motor 26 or the means which controls the power connected to the belt 28 so that either operator can stop or start thc machine at will. Assuming that the motor 20 is utilized to drive the machine,

power is turned into such motor and the.

shaft 19 rotates in such a manne f as to move the arms 38 in the direction of the arrows shown in Fig. 2. Eachoperator places a sheet of leather 35 on the work support comprised of the assembly 32, 33, and 345 by sliding thesame onto such portion when the arm 38 is out of engagement therewith and, referring to Fig. 3, it will be obvious that the operator may grasp the downwardly extending portions of the leather 35 to prevent movement thereof on the elements 32, 33, and 34; when the glazing roll 4;? is in engagement therewith. grasping the downwardly extending portions of the leather 35 in sucha manner as to hold the same at the point marked A in Fig. 2, it will be obvious that what may be termed the forward end of the trough 31 may be utilized as an abutment for holding the 1 leather.

Each time the glazing roll l7 moves out of engagement with the assembly 32, 33, and 34,

and therefore out of eilgagement with the leather 35, the operator lnay shift the position of such leather 35 so as to bring a new portion thereof into position to be engaged by the next succeeding glazing roll 47 and this operation may be repeated indefinitely on the leather 35 or on succeeding pieces of leather. a a

While I have necessarily shown and dc scribed the preferred embodiment of my invention somewhat in detail, it is to be unders stood that I may vary the size, shape, and arrangement of parts within. wide limits without departing from the. spirit of the invention. H i a IIaving thus described my invention, what I claiinas new is: i i i An in'lproved glazing machine comprising ill! a base, a bearing standard secured thereto and located centrally thereof, vertically arranged bearings 111 said standard, a shaft rotatably mounted in said bearings, means v, for rotating said shaft, a hub having radially extending arms in alinement With each other formed thereon and adjustably secured to the top of said shaft, a plurality of standards on said base and extending upwardly therefrom, a circular plate mounted on the top of said standards and centrally located with respect to the Vertical shaft, a plurality of raised Work beds spaced about said circular plate and secured to the top thereof,

In testimony whereof, I have signed my 90 name to this specification.

DANA E. HARDING. 

